Wehrmacht

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World War II

...which dominated operations in this theatre until late in the war, suffered from a severe shortage of motor transport and rolling stock, only partially made good by levies on conquered nations. The
Wehrmacht that invaded the Soviet Union in 1941 consisted mainly of slow-moving infantry divisions supplied by horse-drawn wagons and spearheaded by a few armoured and mechanized units racing ahead....

In September 1939 the Allies, namely Great Britain, France, and Poland, were together superior in industrial resources, population, and military manpower, but the German Army, or
Wehrmacht, because of its armament, training, doctrine, discipline, and fighting spirit, was the most efficient and effective fighting force for its size in the world. The index of military strength in September 1939...